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oooooooo SSSSSSSSS R. vNo. 377,828. Patented 18.11.31, 1888.

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y d l I joint the points of the saw-teeth, but also in UNrrn STATES ROBERT E. POINDEXTER, OF INDIANAPOLIS, INDIANA.

SAW-JO INTER.

SPECIFICATION forming part of Letters Patent No. 377,328. dated January 31, 1888.

Serial No. 253,288. (No model.)

To all whom, it may concern:

Be it known that I, ROBERT E. POINDEX- TER, a citizen of the United States, residing at Indianapolis, inthe county of Marion and State of Indiana, have invented certain new and useful Improvements in Saw-Jointers, ofwhich the following is a specification.

My present invention relates to certain improvements in that class for which Letters Patent No. 246,414 were granted me August 30, 1881, consisting, essentially, in the application of a new clamp to the block of the saw-jointer therein shown, whereby I am enabled to secure the le in said block in position not only to position whereby it is adapted for use in dressing the sides of the saw, as will be hereinafter more particularly described.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a front elevation of the tool constructed alter my improved plan; Fig. 2, a top or plan view ofthe same; Fig. 3, a longitudinal section on the dotted line 3 3 in Fig. l; Fig. 4, a vertical section on the dotted lines 4 4, showing the file in the position it occupies when used to dress the sides of the sawteeth; and Fig. 5, a similar View showing the ille in the position for jointing the points of the teeth.

In said drawings the portions marked A represent the block, B the clamp vfor holding the tile, and C said file.

The construction of the block or skeletonframe is not much different from that shown in my patent above referred to, it being provided with the gage-plate A and flanges a, a', and a2 and lugs and bearings a3 and a, arranged as therein shown. The central part of the flanges a and a are cutout to form a way for the clamp, and at the center is cast a lug, a5, with an internally-screw-threaded perforation with which the clamp-screw engages. A slot, a6, is also formed in the back of the block, in which alug on the back of the clamp is arranged to slide. Vertical anges ai, provided with shoulders as, are also provided to serve as rests for the lower edge of the file when in the fiat position.

The clamp B is simply a sliding piece mounted in the vertical way formed in the flanges a and a?, having a lug or projection on its rear side which tits into the slot a6 in the block. At its top it is provided with a fiange, b', which is notched or perforated to receive the clamp-screw B', which extends down through said notch or perforation in the iange into the screw -threaded lug a5, which is surrounded by the clamp, as shown, and thus is adapted to operate said clamp, as will be now described.

The operation of my said invention is as follows: Vhen it is desired to use the tool for the purpose of dressing the sides of the saw, the tile is secured in the position shown in Fig. 1, between the flange b of the clamp and shoulders or rests as. The clamp-screw is then operated to force the clamp B down, securing said tile rigidly in position. Vhen it is desired to use the tool forjointing the points of the teeth, the file is placed in position, resting upon the lugs fr and bearings a4 below the lower end of the clamp, and said clamp then forced down by means of the screw B to secure said file in position and curve it, if desired.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with the block A, formed with appropriate rests for the file, of the clamp B, constructed to secure said file in position when laid into said block either in a iiat position or on its edge, substantially as set forth.

2. The combination, with the block A, formed with the bearing-points a3, a4, and ai, of the clamp B, mounted to slide in the way formed in said block, and ascrew for operating the same,said clamp being formed with afiange, b, at its top adapted to engage with the edge of the tile when placed in said block in a tlat position, and with a clamping-piece at its bottom adapted to engage with the side of said file when placed in said block edgewise.

3. The combination, with the block A, constructed substantial] y as shown and described, of the block B, mounted in a way formed therein and formed with an upper and lower IOO clamping-jaw engaging with the file when in hand and seal, at Indianapolis, Indiana, this different positions, and the clamping-screw B, 20th day of October, A. D. 1887. extending down through a notch o1' perforation formed in said block and engaging with a ROBERT E' POINDEXTER [L S'] y 5 screw-threaded lug, a5, formedfon said block, Witnesses:

substantially as set forth. E. W. BRADFORD,

In witness whereof I have hereunto set my CHARLES L. THURBER. 

